Silent Text Review

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Pros

Pro

Encrypted message attachments

Files can be attached to messages that will also be encrypted.

Pro

Passed EFF's security review

To pass EFF's security review Silent Text had to encrypt data in transit, the encryption had to be end-to-end, the app needed to provide forward secrecy, app's source code has to be open to independent review, users have to be able to verify contact's identities even with the service provider compromised, app's cryptographic design has to be well documented and app's source code has to have been audited in the last 12 months.

Pro

Messages can be set to self-destruct

Messages on both senders and receivers phones can be set to delete after a set period of time.

Pro

Encrypted locationsharing

It's possible to geotag messages to share location.

Cons

Con

Expensive

While the app itself is free, to use it a subscription is required with prices starting at $9.95/mo.